Cannot get my contract ported to prepaid - worst service ever!

I have phoned in on the 09th of November the first time to port my numbers to prepaid and each time I follow up it has not been done. I have now phoned in four separate occasions and spoke to four different consultants who all promise me they have escalated the request to the team leader and nothing happens!! This is ridiculous. Why should I have to phone in each time to follow up, it should have been done the first time I phoned in.